Film winding machine

ABSTRACT

A machine for winding film consecutively and automatically, by a predetermined length, on tubes without stopping the advance of the film which is continuously delivered from a film supply source to this machine, wherein all operations of film winding, film cutting, supplying a winding position with a roll core, discharging a full film roll from the machine, drawing out mandrel from the full film roll, inserting a mandrel into a tube to form a roll core, and shifting the formed roll core to a roll core magazine and a tube from a tube core magazine to a mandrel inserting position are performed in sequence automatically by an electric or pneumatic mechanism set up in accordance with a predetermined program.

United States Patent [19] Kinoshita l I l 1 3,727,853

14 1 Apr. 17, 1973 [73] Assignee: Kabushiki Kaisha Fuji Tekkosho,

Osaka, Japan 22 Filed: Aug. 26, 1970 211 Appl. No.: 67,027

[30] Foreign Application Priority Data July 7, 1970 Japan ..59335/7O[52] US. Cl. ..242/56 A, 242/64 {51] Int. Cl ..B65h 19/26, B65h 19/28[58] Field of Search 242/56 A, 64, 55. l 242/81 FOREIGN PATENTS ORAPPLICATIONS 793,490 4/1958 Great Britain. ..242/64 2,772,838 Lenz..242/81 X 886,774 1/1962 Great Britain .242/56 A 891,315 3/1962 GreatBritain 142/56 A 1,071,925 6/1967 Great Britain .242/56 A PrimaryExaminer-George F. Mautz Assistant Examiner-John M. JillionsAtt0rneyRobert E. Burns and Emmanuel J. Lobato I 57 ABSTRACT A machinefor winding film consecutively and automatically, by a predeterminedlength, on tubes without stopping the advance of the film which iscontinuously delivered from a film supply source to this machine,wherein all operations of film winding, film cutting, supplying awinding position with a roll core, discharging a full film roll from themachine, drawing out mandrel from the full film roll, inserting amandrel into a tube to form a roll core, and shifting the formed rollcore to a roll core magazine and a tube from a tube core magazine to amandrel inserting position are performed in sequence automatically by anelectric or pneumatic mechanism set up in accordance with apredetermined program 3 Claims, 12 Drawing Figures PATENTEU APR 1 H9753.721853 SHEET 3 OF 9 Y PATENTED APR 1 7 I973 sum u 0F 9 PATENTEB APR 11197s SHEET 5 [IF 9 PATENTEUAPRITIW 3.727. 853

SHEET 7 BF 9 PATENTEI] APR] 7 I975 SHEET 8 OF 9 1 FILM WINDING MACHINEThis invention relates to a machine for winding consecutively andautomatically, by a predetermined length, film of syntheticthermoplastic resin such as polyvinylchloride, polyethylene,polypropylene, polyamides, polyesters and the like on tubes, withoutdelivered from a film supply source, e.g., a film manufacturing-processor a larger roll of film formed on a tube. However, such a processcomprises, in general, steps of putting a paper tube on a mandrel (thisassemblage is hereinafter referred to as roll core"), Placing the rollcore on a rotating drum which drives the roll core to rotate around itsaxis by frictional contact therebetween, taking up film being suppliedfrom a film supply source onto the rotating roll core, stopping therotation of the drum when a predetermined length of film has been rolledup, removing manually the thus formed film roll from the windingposition, placing again another-roll core on the said position, cuttingmanually the film and thereafter enwrapping the newly mounted core withthe cut end of the film connected to the source. Further, the processinvolves manual steps of drawing out the mandrel from the removed filmroll and putting the mandrel into another paper tube, thereby topreparea new preliminary roll core.

In the above mentioned conventional process, the steps of the removal offull film rolls, the supply of roll cores and the attaching of the cutend of film to the roll cores are all conducted manually, so thatcreases are formed on the film at an inner portion as well as the endportion of the rolled film, which considerably deteriorate the product.

Moreover, such a conventional process cannot follow recent filmmanufacturing processes having high productivity and lowers overallefficiency of film production, wherefor it has resulted in a bottleneckof film industry.

In order to obviate the above mentioned drawbacks, numerous studies weremade in the past with respect to automation and continuously processingof film winding, and there have so far been proposed various automaticdevices, for instance, an automatic cutting device by means of anelectrical heater, an automatic winding device for attaching a cut endportion of film to a roll core by means of air jetted flow impingingthereupon,

etc., which have been commonly utilized in a part of film manufacturingprocesses. However, though those devices .employed instead of manualoperations have contributed partly towards the automation of theprocess, yet they cannot attain a synthetic automation of the wholeprocess, so that they are not entirely satisfactory in respect of laborsaving as well as of improvement in productivity.

In view of these facts, the inventor engaged himself for a long time inan extensive study of exploiting an improved, synthetically automaticfilm winding machine and has accomplished the present invention, i.e., afully automated film winding machine having an excellent operationability.

Namely, an object of the present invention is to provide an excellent,fully automated film winding machine having a high productivity andreducing labor cost.

Another object of the invention is a provision of an automated filmwinding machine which can form with easerolls of a predetermined lengthof film neither requiring any manual work nor stopping the advance ofthe film which is continuously delivered from a film 7 supply source tothis machine.

A further object of the invention is to provide a syntheticallyautomated film winding machine which enables one to obtain efficientlyrolls of film, automatically performing without fail sequentialoperations organically related with each other for shifting a windingposition for a full film roll, supplying a roll core, cutting the film,attaching the cut end of the film to the roll core, removing the fullfilm roll, drawing a mandrel from the film roll and putting the mandrelinto another 7 paper tube to form a roll core.

For attaining the above mentioned objects, the feature of the automatedfilm winding machine of the present invention resides in an organicallycombined mechanism of its following means:

1'. A means for winding film which is continuously delivered from a filmsupply source around a roll core being in frictional contact with arotating driving drum.

2. A means for shifting a completed full film roll from a first windingposition to a second winding position both on the driving drum withoutstopping the advance of the film, immediately after a predeterminedlength of film has beenwound.

3. A means for automatically supplying the first winding position with aroll core which is beingrotated around its longitudinal axis at the sameperipheral velocity with that of the driving drum, after the shifting ofthe full film roll from the first winding position to the second windingposition.

4. An automatic cutting and winding means for cutting the film at aposition between the newly supplied roll core and the full film rolllocated at the second winding position and thereafter attaching the cutend of the film of supply side to the roll core, followed by winding upa predetermined length of film around the roll core.

5. A film roll delivery means for shifting the full film roll from thesecond winding position to a mandrel drawing position where the mandrelis automatically drawn out from the roll core and thereafter dischargingthe film roll from the machine.

6. A means for holding a paper tube and transporting it from a papertube magazine to the mandrel drawing position where a mandrel is putinto the paper tube to form a roll core and thereafter shifting theassembled roll core to a roll core magazine.

Details of the above mentioned means and mechanism will be furtherenlightened by the following FIG. 2 is a fragmentary front elevationalview of a driving drum assembly in FIG. 1.

FIGS. 3 to 6 inclusive are illustrative side views for explainingsuccessive operations when and after a predetermined length of film hasbeen wound around a film core.

'FIG. 7 is a front elevational view of an embodiment of a film cuttingmeans comprised in the machine of the present invention.

FIG. 8 is an illustrative side view explaining operations forautomatically supplying roll cores to the first winding position.

FIG. 9 is a schematic view ofa starching device.

FIG. 10 is a side elevational view which shows in details embodimentsofa roll core supply means and of a device for drawing and inserting amandrel.

FIG. 11 is a front elevational view of the embodiment shown in FIG. 10.

FIG. 12 is an illustrative view showing operations of drawing andinserting a mandrel. 1

Now, in FIGS. 1 and 2', a driving drum 1 horizontally mounted on andbetween frames F and F has on both its axles 2 and 2' respective firstshifting arms 3 and 3 and respective second arms 4 and 4' which areslidably mounted thereon in a forked manner. On the circumference ofsleeves from which the first shifting arms 3 and 3' extend, gears 5 and5' are mounted, which engage respectively with sector gears 7 and 7'fixed on an arbor 6 that is pivotally supported at its both ends on theframes F and F A lever 8 fixed on one endof the arbor 6 is connectedwith a first piston cylinder 10 which is rotatably mounted at its bottomend on the frame, so that the operation of the first piston cylinder 10causes the first shifting arms 3 and 3' to swing around the axis of thedriving drum 1 by an angle corresponding to the stroke of the piston.

The second shifting arms 4 and 4 are provided, at their upper ends,respectively with hinges 11 and 11 on which levers l2 and 12 arepivotally mounted respectively and locked by toggles l3 and 13' eachprovided at its free end with a roll. The toggles 13 and 13 areconnected respectively, by arms 14 and 14' extending opposite to thelocation of the roll, with discharging piston cylinders 15 and 15. Thebottom ends of the discharging piston cylinders 15 and 15' are rotatablymounted on pivots l6 and 16' respectively which are.

positioned opposite to the hinges I1 and 11' on the second shifting arms4 and 4'. Further, the second shifting arms 4 and 4' are connectedrespectively with second piston cylinders 17 and 17' which are rotatablymounted on the frames, so that the operation of the second pistoncylinders cause the second shifting arms 4 and 4' to swing around theaxis of the driving drum 1 by an angle corresponding to the stroke ofpiston of the second cylinders, while the discharging piston cylinders15 and 15 operate so as to release the toggles l3 and 13' from theirengagement with the levers l2 and 12 on the second shifting arms andthus the levers l2 and 12' swing around the hinges l1 and II. Thereference numeral 18 designates stoppers or stops for the levers l2 and12'.

Next, in FIGS. 1 and 7 which illustrate cutting and winding devices, acutter 19 supported by a cutter supporting arm 20 is mounted to travelon the surface of the driving drum 1 along it longitudinally. Along acutter guide beam 21, traverses a carriage or traveller 22 which isprovided with eight wheels 23 for reducing a frictional resistance ofthe traveller while traversing. The cutter supporting arm 20 isattached, with a hinge 24, to the bottom of the traveller 22, hangingtherefrom, and pulled by a spring 25 one end of which is fixed on thetraveller, in such a manner that the cutter supporting arm 20 may swingcounter-clockwise in FIG. 7 and thus the cutter 19 is pressed downagainst the driving drum 1 when travelling on the driving drum.

The traveller 22 is connected with an appropriate power source. In theembodiment shown in FIG. 7, roller chains 26 and 26' are connected witha piston cylinder for cutter travel 27 through a plurality of chainwheels whereby the motion of the piston cylinder 27 is amplified tofourfold.

The cutter supporting arm 20 is formed into a twoarm lever the vertex ofwhich is attached to the hinge 24, and provided at its end opposite tothe cutter with a roll 28 which is borne up by a cutter guide bar 29.The cutter guide bar 29 is raised or lowered by a lift cylinder 30'.Upon operation of the piston cylinder for cutter travel 27, the cutterl9 commences its traverse in a direction a shown by the arrow in FIG. 7and when the roll 28 has left the cutter guide bar 29, it comes intocontact with the surface of the driving drum 1 and further travelsthereon along it longitudinally and is pressed down by the spring 25against the driving drum.

The cutter travelling as mentioned above is shown by chain lines at aposition X in FIG. 7. When the cutter 19 gets through its travel on thesurface of the driving drum 1, the cutter supporting arm 20 being pulledby the spring 25 is rotated about the hinge 24. Such condition is shownby chain lines at a position X in FIG. 7.

By a reverse action of the piston cylinder for cutter travel 27, thecutter 19 returns to its original position and is kept apart from thesurface of the driving drum 1 during its return travel, i.e., in thecondition shown at X in FIG. 7. When the cutter 19 returns to itsoriginal position, the cutter guide bar 29 is in its lowered position29' as shown by chain lines in FIG. 7, so that the roll 28 is notinterfered with by the cutter guide bar 29. After the cutter 19 hasreturned to its original position, the cutter guide bar 29 is raised tothe position shown by solid lines in FIG. 7.

An automatic supply device for a roll core is illustrated in FIGS. 1 and8 wherein a roll core magazine stopper 30 is actuated by a pistoncylinder for magazine stopper 31 and two supply arms 32 arranged inparallel with each other are mounted at their one ends on an arbor 33whereby they are enabled to swing concurrently.

With one end of the supply arm 32 a supply piston cylinder 34 isconnected. Further, on the supply arm 32, a piston cylinder 35 ispivotally mounted which is connected with a lever 36. One end of thelever 36 is pivotally attached to the supply arm 32 and the free endthereof is provided with an idler roll 37. On and between the respectivefree ends of the supply arms 32, two driving rolls 38 and 39 are mountedin parallel with each other which are being rotated, by an appropriatedriving means, at a peripheral velocity corresponding with the filmdelivery speed.

Feed of the roll coreM onto the driving drum 1 is conducted by thesupply arm 32. Upon operation of the supply piston cylinder 34, thesupply arm 32 swings so whereby the outermost roll core M, retained inthe magazine drops and is received by the Supply arm 32 standing by atthe position 34'.

The supply arm 32 whieh has been loaded with the roll core M is loweredby the working of the supply piston cylinder 34. On its way downward,the piston cylinder 35 works to swing the lever 36, so that roll core Mgloaded on the end of the supply arm 32 is held by the idler roll 37 anddriving rolls 38 and 39, when the roll core M, is driven by the drivingrolls 38 and 39, torotate at a peripheral velocity synchronous with thefilm delivery speed. i

Above the aforementioned supply device for roll core which comprises thesupply arm 32 as its main part, a starching device is positioned. Thisdevice serves to apply starch to a marginal part of the rotating rollcore M in the form of a band, when the roll core M, held by the abovementioned supply arm 32 and driven by driving rolls 38 and 39 comes to aposition a little above the driving drum 1.

The starching device is shown in FIG. 9 wherein a starching roll 41 thebottom of which is immersed in a starch bath is revolved slowly by anappropriate driving source and a pneumatic piston cylinder 42 isprovided with a plunger 43 which has at its end a fur'nishe'r roll 44.The furnisher roll 44 is brought into contact with the starching roll 41whereby starch is transferred from the starching roll 41 to thefurnisher roll 44. Just before the rotating roll core M is shifted fromthe supply arm 32 to the driving drum 1, the pneumatic.pistoncylinder 42works to press the furnisher roll 44 to the awaiting roll core M, andstarch adhered on the furnisher roll 44 is applied to the roll core M Onthe other hand, as shown in FIGS to 12, the machine of the presentinvention includes a device for drawing and inserting a mandrel and adevice for'transportingapaper tube into which a mandrel is inserted,i.e., a roll core to a roll core magazine. These devices interrelatewith the aforementioned device and characterizes the present invention.Principal parts of these devices, Le, a means for drawing and insertinga mandrel and a means for transporting and feeding rollcores areexplained hereinafter in accordance with FIGS 1 and 10. i

In FIG. 1, a receiving member 46 for fall roll cores is positioned at adelivery side of the second shifting arm 4 and a gangboard 45 is laidbetween the receiving member 46 and the second shifting arm 4. Thereceiving member 46 can swing up or down about a shaft 4!! by engagingitself with or disengaging from a dischargs toggle 48 i h i o nect ith aPi tQn cylindr 47 whereby the full roll core is discharged from thereceiving member 46. On one side of the receiving member 46, a devicefor drawing and inserting a mandrel M of roll core is installed. whi his adapted for drawing a mandrel from a full roll core placed on thereceiving member 46 and for inserting'it into a paper tube which isplaced on the receiving member after the film roll has been discharged.I

An embodiment of the device for drawing and inserting the mandrel M,, isshown in FIGS. 10 to 12. This device comprises basically a pair ofrolls, i.e., a draw roll 50 and a fluted press roll 51. The draw roll 50is provided with a gear wheel 53 wedged up on the bottom end of its axle52. The gear wheel 53 is engaged with another gear wheel 55 which iswedged up on a shaft of a motor 54 and thus transmit revolution from themotor 54 to the draw roll 50. On the other hand, the press roll 51 isrotatably mounted on a shaft 56 which is pivotally mounted on a lever57. The lever 57 is connected through a link 58 with a fluid pressureacting piston cylinder 59.

Thus, upon starting up of the motor 54, the draw roll 50 is rotatedthrough the gear wheels 53 and 55 and draws laterally a mandrel M, whichis held by and between the draw roll 50 and the press roll 51. Duringthe drawing action, the press roll 51 is driven by the movement of themandrel M, contacted therewith and the mandrel M is led through guiderolls. When the mandrel M,, has been drawn out from the full roll core,the motor stops and the aforementioned receiving member 46 commences itsswing down motion to discharge the film roll.

A tube supply device is located abovethe aforementioned device fordrawing and inserting a mandrel M which is shown in detail in FIGS. 1,l0 and 11. Referring to Figures, tube catcher 60 is connected byconnecting arms 61 with a beam 62 which is slidably mounted on andbetween two guide bars 63 fixed vertically on the machine'frames. At theboth ends of the beam, slide bearings (not shown) are encased andmounted slidably on guide bars 63. The tube catcher 60, connecting arms61, beam 62 and the slide bearings are all together hung down by rollerchains 64 and connected through chain wheels 65 with a fluid pressureacting piston cylinder 66. The aforementioned tube catcher 60 isprovided with jaws 60 and arms 68 When the arms 68 comes into contactwith fixed dogs 70 which are protrusively locatedbeneath the tip of atube magazine rail 69, the jaws 60' swing downward to open and areenabled to receive a paper tube rolling therein. I i

In FIGS. 1 and 10, a stopper 71 is operated by an action ofa fluidpressure acting piston cylinder 72 so as to release and deliver papertubes one by one to the tube catcher 60. The jaws 60' are normally in araised and closed state by resilience of springs 67. When the tubecatcher 60 loaded with a paper tube descends and the arms 68 becomeapart from the fixed dogs 70, the tips of jaws 60' are raised by theforce of the springs 67, so that the paper tube is held by the tubecatcher 60.

When the tube catcher 60 has reached to the mandrel drawing andinserting position just above the receiving member 46, the draw roll 50is reversely rotated in order to insert the mandrel M,, into the papertube. Under the tube magazine rail 69, a roll core magazine 40 isarranged, which receives a roll core, i.e., a paper tube combined with amandrel. The roll core magazine 40 has at its entrance a cam 73 which isworked by a coil-spring (not'shown) so as to be rotatedcounter-clockwise and recoiled to its original state upon removal offorce acted thereon.

Accordingly, when the tube catcher 60 loaded with a 7 paper tubedescends, the arm 68 pushes down the cam 73 to rotate counter-clockwisepermitting the tube catcher 60 to pass freely. On the other hand, whenthe tube catcher loaded with a roll core combined with a mandrelascends, the above mentioned cam 73 presses the arm 68 of the tubecatcher 60 downward, so that the jaws 60 open and the roll core isdischarged and shifted to the roll core magazine 40.

Now, a series of operations of the film winding machine of the presentinvention will be illustrated hereafter based on the above mentionedmechanism.

In FIGS. 1 through 6, a roll core M is placed on the driving drum 1 andthe mandrel M,, of the roll core M is supported at its both ends byrolls of the first shifting arms 3 and 3. The roll core is surfacedriven by the driving roll 1 and winds up thereon film being deliveredfrom the preceding process. As soon as a detector detects the film rollsize has reached a predetermined diameter, the second shifting arms 4and 4' swing to approach to the first winding position adjacent to thefirst shifting arms 3 and 3, in order to bring the full film roll (FIG.4 is referred to). Next, the first shifting arms 3 and 3, swing slowly,holding the both ends of the mandrel of the full film roll between thefirst shifting arms 3 and 3 and the second shifting arms 4 and 4',functioning as two pairs of grippers, shift the full film roll to thesecond winding position (FIG. 5 is referred to). Subsequent to the aboveeach of, the first shifting arms 3 and 3 returns to its originalposition by the working of a change-over switch of air supply for thefirst piston cylinder 10, when the second shifting arms 4 and 4' stop atits regular position.

Thereafter, the supply arm 32 swings upward upon operation of the supplypiston cylinder 34 and the roll core magazine stopper rotates to permita roll core in the roll core magazine to drop onto the supply arm 32which is awaiting at a receiving position 34' shown in FIG. 8. Afterbeing loaded with the roll core M the supply arm 32 swings backdownward. On its way downward, the lever 36 attached to the supply arm32 swings, whereby the roll core is held at three points and at the sametime, driving rolls 38 and 39 on the supply arm commence to rotate.

When the peripheral velocity of the rotating roll core held by thesupply arm 32 becomes the same as the running velocity of the film, theroll core comes down to and stands by at a position where the bottom ofthe roll core is kept approximately 5mm apart from the surface of thedriving drum 1.

Then, the starching device starts its working and the furnisher roll 44applies starch, in a form ofa band, to a marginal part of the rotatingroll core (FIG. 9 is referred to).

On the other hand, along the cutter guide beam 21, the cutter l9traverses, on the surface of the driving drum 1, across the running filmwhereby film is cut. Before the commencement of the above mentionedcutting operation, i.e., just before the cutter 19 reaches the selvageof film, the supply arm 32 awaiting as mentioned above descends rapidlyto put the roll core on the driving drum 1. Since the roll core M hasits mar ginal part applied with starch, a bias cut end of the film iswound on the roll core.

After cutting the film, the cutter 19 at the terminal of its travellingpath is pulled up by the spring 25 and returns to its original positionas it is kept apart from the surface of the driving drum 1.

Then, the full film roll in the second winding position is dischargedand shifted onto the receiving member 46. Namely, in the second windingposition, the mandrel M is supported by the second shifting arms 4 and4. The second shifting arms 4 and 4 are connected by hinges 11 and 11respectively with levers 12 and 12 which are kept upright by toggles 13and 13'. Upon disengagement of the toggles 13 and 13 from the levers l2and 12', these levers fall down and the full roll core rolls down overthe gangboard 45 to the receiving member 46 (FIG. 6 is referred to).

From the full roll core placed on the receiving member 46, at firstthemandrel M, is drawn out by the device for drawing and inserting amandrel which is worked by a pneumatic cylinder. The above mentioneddrawing operation is conducted by holding the mandrel between two rolls50 and S1 and one of these rolls is revolved by means of motor drive, todraw out the mandrel M,

The film roll from which the mandrel M has been drawn out is dischargedfrom the machine upon swinging down of the receiving member 46.

While the mandrel M,, is drawn out of the full roll core and the filmroll is discharged from the machine as above, the tube catcher 60 loadedwith a paper tube comes down from above. When the tube catcher 60 hasreached a mandrel inserting position that is same with a mandrel drawingposition and just above the receiving member 46, the draw roll 50 isrotated reversely to insert a mandrel M, into the paper tube held by thetube catcher 60. After completion of the insert of the mandrel M intothe paper tube, the tube catcher 60 ascends. When it passes by theentrance of the roll core magazine 40 on its way upward, its arm 68engages with the cam 73, whereupon the roll core is released fromholding and delivered onto the roll core magazine 40.

The above mentioned is an embodiment of sequential operations for filmwinding, film cutting, supply and discharge of roll core, preparation ofroll core, etc., and all of those operations are performed in sequenceautomatically by an electric or pneumatic mechanism set up in accordancewith a predetermined program.

The film winding machine of the present invention has its mechanism andfunction as mentioned above, and therefore is suitable for automaticoperation in well accordance with nature of film as well as withdelivery speed of film. Further, since the winding operation of thepresent machine can be conducted automatically and consecutively withoutstopping it even when full film roll 'doffing and tube donning,considerable labor saving and extremely high efficiency are achieved, sothat the present invention contributes to rationalization of a filmwinding process.

Furthermore, it is a very important feature of the present inventionthat sequential operations for mandrel drawing and inserting, filmcutting, roll core supplying, etc. are performed smoothly according to asequence control by mechanical and electrical means and that a uniformroll of film of constant length having none of split, crease and strainis obtainable.

What is claimed is:

1. An automatic machine for automatically winding film on individualcores to form rolls of film comprising, a rotationally driven drum, coredelivery means to deliver cores individually sequentially to saidrotatably driven drum at the surface thereof at a first winding positionfor rotation by said drum by frictional contact and including means torotatably drive the cores individually before placement on said drum andat a peripheral speed approximating a linear speed of a film advancedlongitudinally for winding on said cores individually to form rolls offilm, means cooperating with said core delivery means to apply anadhesive to the cores individually prior to delivery of the cores tosaid driven drum, means to deliver a film to said driven drumlongitudinally for application against said adhesive on the individualcores for winding respective lengths of film on the individual coresduring rotation thereof at said first position to form individual rollsof film, means to deliver the individual rolls of film to a secondposition on said driven drums while continuing to rotate the individualrolls while winding film thereon, means to selectively sever theadvancing film to terminate the winding of film on the individual rollsand to apply the film severed to the adhesive of a next successive corefor winding film thereon, means to eject the wound rolls of film fromsaid second position as an output of said machine, said means to deliverthe rolls of film from the first position to the second positioncomprising two pairs of grippers, and means for operating the grippersof each pair jointly and separate ly selectively for positioning one ofthe grippers of each pair in position to hold the individual cores androlls of film in said first position and for moving grippers to eachpair to move the rolls of film individually from said first position tosaid second position.

2. An automatic machine for automatically winding film on individualcores according to claim 1, including means to automatically insertmandrels into the in- 1 dividual cores before delivery to said drivendrum and including means to automatically remove the mandrels from thecompleted rolls of film individually.

3. An automatic machine for automatically winding film on individualcores according to claim 2, in which said means to insert and remove themandrels in and from the cores comprises a pair of rolls rotatable inone direction for removing the mandrels and in an opposite direction forinserting the cores.

1. An automatic machine for automatically winding film on individualcores to form rolls of film comprising, a rotationally driven drum, coredelivery means to deliver cores individually sequentially to saidrotatably driven drum at the surface thereof at a first winding positionfor rotation by said drum by frictional contact and including means torotatably drive the cores individually before placement on said drum andat a peripheral speed approximating a linear speed of a film advancedlongitudinally for winding on said cores individually to form rolls offilm, means cooperating with said core delivery means to apply anadhesive to the cores individually prior to delivery of the cores tosaid driven drum, means to deliver a film to said driven drumlongitudinally for application against said adhesive on the individualcores for winding respective lengths of film on the individual coresduring rotation thereof at said first position to form individual rollsof film, means to deliver the individual rolls of film to a secondposition on said driven drums while continuing to rotate the individualrolls while winding film thereon, means to selectively sever theadvancing film to terminate the winding of film on the individual rollsand to apply the film severed to the adhesive of a next successive corefor winding film thereon, means to eject the wound rolls of film fromsaid second position as an output of said machine, said means to deliverthe rolls of film from the first position to the second positioncomprising two pairs of grippers, and means for operating the grippersof each pair jointly and separately selectively for positioning one ofthe grippers of each pair in position to hold the individual cores androlls of film in said first position and for moving grippers to eachpair to move the rolls of film individually from said first position tosaid second position.
 2. An automatic machine for automatically windingfilm on individual cores according to claim 1, including means toautomatically insert mandrels into the individual cores before deliveryto said driven drum and including means to automatically remove themandrels from the completed rolls of film individually.
 3. An automaticmachine for automatically winding film on individual cores according toclaim 2, in which said means to insert and remove the mandrels in andfrom the cores comprises a pair of rolls rotatable in one direction forremoving the mandrels and in an opposite direction for inserting thecores.